// concurrent/CompletableUtilities.java
// (c)2017 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://OnJava8.com for more book information.

import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;

public class CompletableUtilities {
    // Get and show value stored in a CF:
    public static void showr(CompletableFuture<?> c) {
        try {
            System.out.println(c.get());
        } catch (InterruptedException
                | ExecutionException e) {
            throw new RuntimeException(e);
        }
    }

    // For CF operations that have no value:
    public static void voidr(CompletableFuture<Void> c) {
        try {
            c.get(); // Returns void
        } catch (InterruptedException
                | ExecutionException e) {
            throw new RuntimeException(e);
        }
    }
}
